For those who were at training last Saturday...
... we were talking about gyaku do (逆胴 – "opposite or unorthodox do"), now called hidari do (左胴 – left do).
Well here is the video I mentioned. Koyama sensei (Kyoshi 7 dan) in white representing the East, versus Ishida sensei (Kyoshi 7 dan) in red representing the West, 2002 East-West Championship.
Look closely at the technique and how he does it. I think there is something very interesting that he does (or rather that he doesn't do) which makes it successful.